Web site Nextdoor connects you to your neighbors with a private social network built around where you live. Sounds a little silly, but it's actually got some potential.

When you sign up for Nextdoor, you enter your real name and address (which you also have to verify). If someone has already started Nextdoor in your neighborhood, you'll be prompted to join them. If not, you'll instead be prompted to create a network for your neighborhood. When 10 or more neighbors join you, your Nextdoor network becomes permanent.

The obvious question: What's Nextdoor got to offer over, say, Facebook? One of the most compelling features Nextdoor offers is a more direct line for asking for the kind of help, advice, or even favors that you'd really only ask a neighbor for. Has anyone seen your cat? Does anyone have a ladder you can borrow? And so on.

Still, it's tough to get all that excited about yet another social network, but frankly, an idea like Nextdoor brings something more original and innovative to the table than, say, what Google has done with Google+. If you've used it, let's hear your thoughts in the comments.